Discount Water Filters and Air Filters at Discount Filter Store.com

When we protect your filter purchase with our No Worries Guarantee, we mean it!

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  • Your filters are guaranteed to be the right fit!
  • Our products are price match guaranteed!
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  • You’re guaranteed to find expert help!

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Water Filtration Systems & Filters

Discount Filter Store carries a wide variety of water filters and filtration systems to make sure that you have clean water everywhere you need it. We offer camping water filters, RV filters, water bottles for travelers on the go. Purify your office or home’s drinking water with countertop filter systems, commercial grade filters, and whole house filter systems. Our filters are protected by our 100% Price Match Guarantee. We are happy to offer you the lowest possible price on our filters, matching any lower price listed by competitors.

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  • F2-WHITE Instapure Essentials Faucet Filter System - White

    F2-WHITE Instapure Essentials Faucet Filter System - White

    $13.89
    MSRP: $21.99
    Save 37%
  • C1-20 Pentek Comparable Whole House Carbon Water Filter by Tier1
  • WFPFC3002 DuPont Universal Whole House Pleated Poly Filter Cartridge (2-Pack)
  • HAC-10-W Harmsco Activated Carbon Water Filter Cartridge

    HAC-10-W Harmsco Activated Carbon Water Filter Cartridge

    $13.99
    MSRP: $19.99
    Save 30%
  • DuPont WFPTC050X Water Pitcher Replacement Cartridge
  • C1-20 Pentek Comparable Whole House Carbon Water Filter by Tier1
  • SDC-45-1020 Hydronix Comparable Sediment Water Filter by Tier1
  • SDC-45-1010 Hydronix Comparable Sediment Water Filter by Tier1
  • W20CLHD American Plumber Whole House Sediment Filter by Tier1
  • ECP20-BB Pentek Comparable Whole House Sediment Water Filter by Tier1
  • FPMB-BB20-10 Watts Comparable Whole House Sediment Water Filter by Tier 1
  • DGD-7525 Pentek Comparable Whole House Replacement Sediment Filter Cartridge by Tier1
  • Pentek 255579-43 Inline Sediment Water Filter Replacement

    Pentek 255579-43 Inline Sediment Water Filter Replacement

    $14.29
    MSRP: $21.99
    Save 35%
  • K2586-KK Omnipure Inline Water Filter

    K2586-KK Omnipure Inline Water Filter

    $14.29
    MSRP: $20.99
    Save 32%
  • PS1-20C Pentek Sediment Water Filter
  • Tier1 Culligan Compatible PRE-RO Carbon Block Reverse Osmosis
  • WFFMC300X DuPont Faucet Mount Replacement Cartridge - Ultra Protection Filter
  • R50-BB Pentek Comparable Whole House Sediment Water Filter by Tier1
  • WFDWC20001 DuPont Universal Drinking Water Carbon Block Cartridge
  • WFPFC8002 DuPont Universal Whole House Carbon Wrap Two-Phase Cartridge (2-pack)
  • Hydronix SDC-45-1020 Sediment Filter Cartridge
  • DGD-2501 Pentek Whole House Water Filter
  • DGD-7525 Pentek Whole House Sediment Filter
  • ECP5-BB Pentek Whole House Water Filter
  • Pentek NCP-20 Whole House Water Filter Replacement Cartridge

    Pentek NCP-20 Whole House Water Filter Replacement Cartridge

    $14.99 MSRP: $20.57
    Save 27%
  • Pentek P1-20 Whole House Water Filter Replacement Cartridge
  • Pentek S1-BB Replacement Water Filter Cartridge

    Pentek S1-BB Water Filter Cartridge Replacement

    $14.99 MSRP: $17.99
    Save 17%
  • WPX25BB97P Pentek Comparable String Wound Sediment Water Filter (20 micron) by Tier1
  • HDG-CB-AC10 Hydronix Comparable PRE-RO Carbon Block Reverse Osmosis Filter by Tier1
  • CB1-10 Pentek Carbon Block Water Filter Replacement

    CB1-10 Pentek Carbon Block Water Filter Replacement

    $15.39
    MSRP: $23.99
    Save 36%
  • DGD-5005 Pentek Whole House Filter Cartridge
  • AP420 3M Aqua-Pure Comparable Whole House Filter Replacement Cartridge by Tier1(2-Pack)
  • Hydronix HF2-10CLWH12 Clear 10 inch Filter Housing
  • 602896 Viqua Pro Lamp Cord Retainer Wire Form

    602896 Viqua Pro Lamp Cord Retainer Wire Form

    $15.99
    MSRP: $18.34
    Save 13%
  • 158098 Pentek Slim Line Water Filter Housing System

    158098 Pentek Slim Line Water Filter Housing System

    $15.99
    MSRP: $19.99
    Save 20%
  • Hydronix SPC-45-1005 Whole House Sediment Filter Cartridge
  • Pentek ECP1-BB Replacement Water Filter Cartridge

    Pentek ECP1-BB Water Filter Cartridge Replacement

    $15.99 MSRP: $17.12
    Save 7%
  • Pentek ECP20-20 Replacement Water Filter Cartridge

    ECP20-20 Pentek Replacement Filter Cartridge

    $15.99 MSRP: $21.99
    Save 27%
  • Pentek ECP20-BB Replacement Water Filter Cartridge

    ECP20-BB Pentek Replacement Filter Cartridge

    $15.99 MSRP: $17.70
    Save 10%
  • R30BB Pentek Comparable Whole House Water Filter by Tier1

    R30BB Pentek Tier1 Comparable Whole House Water Filter

    $15.99 MSRP: $17.99
    Save 11%
  • The Pentek C1 comparable Whole House Carbon Water Filter by Tier1

    Pentek C1 Comparable Carbon Block Water Filter by Tier1

    $15.99 MSRP: $19.99
    Save 20%
  • Brita Intenza IZ-2219 Comparable Replacement Coffee Water Filter by Tier1 (2-Pack)

Items 97 to 144 of 605 total

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